Synthesis, characterization, and luminescent properties of three-coordinate copper(I) halide complexes containing a carbazolyl monodentate phosphine ligand

A series of three-coordinate dinuclear copper halide complexes containing acarbazolyl monodentate phosphine ligand, [CuX(dppc)] 2 (dppc =3,6-di-tert-butyl-9-[2-(diphenylphosphino)phenyl]carbazole, X = I (1), Br (2), and Cl (3)), were synthesized, and their molecular structures and photophysical prop...

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Bibliographic Details
Published in:Journal of coordination chemistry 2018-12, Vol.71 (24), p.4072-4085
Main Authors: Li, Qian, Wei, Qiong, Xie, Pei, Liu, Li, Zhong, Xin-Xin, Li, Fa-Bao, Zhu, Nian-Yong, Wong, Wai-Yeung, Chan, Wesley Ting-Kwok, Qin, Hai-Mei, Alharbi, Njud S.
Format: Article
Language:English
Subjects:
carbazole
Carbazoles
Chemical synthesis
Coordination compounds
Copper
Crystal structure
Cu(I) complex
Emission
Ligands
luminescence
Optical properties
Structural analysis
synthesis
Thermal stability
three-coordinate
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Summary:A series of three-coordinate dinuclear copper halide complexes containing acarbazolyl monodentate phosphine ligand, [CuX(dppc)] 2 (dppc =3,6-di-tert-butyl-9-[2-(diphenylphosphino)phenyl]carbazole, X = I (1), Br (2), and Cl (3)), were synthesized, and their molecular structures and photophysical properties were investigated. The structural analysis reveals that two copper(I) centers are bridged by two halogen ligands to form a dinuclear structure with a four-membered Cu 2 X 2 ring. Crystal structures of 1-3 contain 1-D supramolecular arrays constructed by intermolecular C-H···π interactions. These complexes exhibit blue to green emission in the solid state at room temperature and have peak emission wavelengths at 492-495 nm with microsecond lifetimes and low emission quantum yields (< 0.01%). The emission of 1-3 mainly originates from MLCT, XLCT, and IL (intraligand) transitions. The three complexes displayed good thermal stability.
ISSN:0095-8972
1029-0389
DOI:10.1080/00958972.2018.1531128